DESCRIPTION OF GENERA AND SPECIES. 189 
pygidium, convex and narrowing gradually from the anterior margin to its termina- 
tion; it is crossed by from five to six shallow, transverse furrows that outline from 
six to seven slightly convex rings and a terminal section; from the axial lobe the 
surface of the pleural lobes slopes at first gently and then quite rapidly down for 
about two-thirds of their width and then very gradually out to the margin. They 
are marked by five or six broad furrows and rather broad, flattened ridges that are 
the continuation on the pleural lobe of the transverse rings on the axial lobe; the 
posterior margin curves more or less inward toward the median line so as to give 
a slightly indented outline to the otherwise rounded curve of the sides and pos- 
terior margin of the pygidium. 
Surface under a strong lens shows numerous pits or pores; the free cheeks and 
the cranidium in front of the glabella and palpebral ridges are beautifully marked by 
irregular radiating ridges that branch quite irregularly and are united by irregular 
cross-ridges so as to give an anastomosing effect. 
The dimensions are shown by the figures on plate 18, figures 3 and 3a. 
The cranidium of this species is much like that of Anomocare lve [plate 18, fig. 
1]. Each has a broad, more or less concave frontal limb and margin marked by radi- 
ating ridges, large eyes, and elongate glabella marked by five short lobes on each side. 
The pygidium in each species is of the same type and the surface has the same 
punctate character in each. 
Anomocare convexa is associated with several other species of Anomocare. 
Formation and Locality—-Middle Cambrian: (90x) Conasauga formation, in 
and attached to the outer surface of siliceous nodules in the Conasauga (Coosa) 
shales, Coosa Valley, east of Center, Cherokee County, Alabama. 
Collected by A. M. Gibson, 1884, and Cooper Curtice, 1885. 
Anomocare daulis Walcott. 
Plate 18, Figures 7, 7a. 
Anomocare ? daulis WALCOTT, 1905, Proc. U. S. Nat. Mus., vol. xxrx, p. 50. (Described as a new 
species essentially as below.) 
Of this species the central portions of the cephalon, exclusive of the free cheeks, 
and associated pygidium are known. Glabella rather strongly convex and faintly 
marked by three pairs of furrows; it narrows slightly toward the rounded front; 
occipital furrow narrow and curving slightly forward at the center; occipital ring 
of medium and nearly uniform width from side to side; dorsal furrow shallow and 
rounded; posteriorly the latter separates a narrow, elongated lobe from the side of 
the glabella, and joins the occipital furrow; the narrow lobe mentioned extends 
backward to the occipital furrow and laterally merges into the fixed cheek; from 
another point of view the dorsal furrow might be considered to pass outside of the 
narrow, elongate lobe, near the base of the glabella, and the furrow between the 
glabella and the elongate lobe would then be an inner division of the dorsal furrow. 
The surface of the glabella is somewhat irregular on account of the lateral furrows, 
and on account of a rather rounded, broad, longitudinal ridge which extends its 
entire length. 
Fixed cheeks less than half the width of the glabella; they rise from the dorsal 
furrow and merge into the large eye-lobe, and anteriorly are divided by the strong 
palpebral ridge which passes into the strong palpebral lobe; in front of the palpebral 
ridge the cheeks slope downward to a second ridge which extends from the front line 
of the glabella subparallel to the palpebral ridge as far as the facial sutures; frontal 
limb relatively long, slightly concave to the narrow, very slightly rounded rim; pos- 
tero-lateral limbs short and marked bya strong curve within the narrow posterior rim. 
